Comments
Restriction digests of the clone give the following sizes (kb): EcoRI--9.2; EcoRV--4.2, 1.7, 1.5, 1.1, 0.9; EcoRI/MluI--8.4, 0.8.
Contains sequences encoding lacIq, a tac promoter, and lacZalpha to allow direct screening by inactivation of alpha-complementation.
Constructed by replacing the MluI/EcoRI fragment of pMMB206 (taclacUV5 promoter) with the MluI/EcoRI fragment from pMMB311 (tac promoter).